不同退火不同轧制工艺铝阳极的组织和性能
Effect of Annealing on Performance of Al Alloy Anodes Prepared by Different Rolling Technologies
摘 要
通过添加微量合金元素,制备了性能优异的电池用铝合金阳极.采用析氢测量法、计时-电位法(E-T曲线)、Tafel曲线、透射电镜、扫描电镜和能谱分析等方法研究了退火对不同热轧道次变形量的铝合金阳极在80 ℃、添加缓蚀剂Na2SnO3的5 mol/L NaOH电解液中的电化学性能和耐腐蚀性能的影响.结果表明:当道次变形量为30%和40%时,退火后,铝阳极耐腐蚀性能提高,但活性降低.当道次变形量为50%时,退火后偏析相细小、均匀分布,偏析相中活性元素Sn、In等的含量大大减少,其活性和耐腐蚀性能都得到提高.在热轧温度400 ℃、道次变形量为40%的情况下,510 ℃退火5 h的铝合金阳极耐腐蚀性能最佳.
道次变形量
退火
再结晶
Al alloy anode
pass deformation
annealing
recrystallization
Abstract
Modern examination techniques such as hydrogen evolution testing,galvanodynamic (E-T curves) method,Tafel curves,SEM and EDX were applied to analyze the electrochemical properties of Al alloy anodes treated with different hot rolling pass deformation degrees in alkaline solution (80 ℃,Na2SnO3 + 5 mol/L NaOH).The results showed that after annealing when the pass deformation was 30% and 40%,the activity of Al alloy anode decreased while the anti-corrosion properties improved.When rolling pass deformation was 50%,the segregation phase became fine and uniform distribution,the amount of active elements Sn and In in segregation phase largely reduced,the comprehensive properties of the anode was improved.Under the condition of hot rolling temperature 400 ℃ and pass deformation 40%,the Al alloy anode gained the best performance after annealing at 510 ℃ for 5 h.
中图分类号 TM911.41 TG172
所属栏目 试验研究
基金项目 国家自然科学基金资助项目 (50774097);国家自然科学基金创新研究群体科学基金项目(50721003)
收稿日期 2009/4/13
修改稿日期 2009/6/2
网络出版日期
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联系人作者官迪凯(gdk199@126.com)
引用该论文: LIANG Shu-quan,GUAN Di-kai,MAO Zhi-wei,ZHANG Yong,TANG Yan,LIU Rong. Effect of Annealing on Performance of Al Alloy Anodes Prepared by Different Rolling Technologies[J]. Corrosion & Protection, 2010, 31(3): 212～215
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参考文献
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【4】Mance A,Cerovi D,Mihajlovi A.The effect of small additions of indium and thallium on the corrosion behaviour of aluminium in sea water[J].Appl Electrochem,1984,14(4):459-46.
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【9】Patnaik R S M,Ganesh S,Ashok G.Heat management in aluminium/air batteries: sources of heat[J].Power Sources,1994,50(3):331-342.
【10】Gnana Sahaya Rosilda L,Ganesan M,Anbu Kulandainathan M.Influence of inhibitors on corrosion and anodic behaviour of different grades of aluminium in alkaline media[J].Power Sources,1994,50(3):321-329.
【11】Lin J C,Shth H C.Improvement of the current efficiency of an Al-Zn-In anode by heat-treatment[J].Electrochem Soc,1987,134(4):817-823.
【12】祁洪飞,梁广川,李国禄,等.均匀化退火对铝合金阳极活化性能的影响[J].材料工程,2005(10):27-30.
【13】魏宝明.金属腐蚀理论及应用[M].北京:化学工业出版社,1984．
【14】廖海星,朱鸿赫,齐公台,等.温度对铝合金牺牲阳极活化溶解行为的影响[J].华中科技大学学报(自然科学版),2004,32(2):114-116.
【15】Zazoua A,Azzouz N.An investigation on the use of indium to increase dissolution of Al Zn anodes in sea water[J].Materials & Design,2008,29(4):806-810.
【16】蒙多尔福L F.铝合金的组织与性能[M].北京:冶金工业出版社,1988:102-103.
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